D-Link router DSL-2750B firmware 1.01 to 1.03 – remote command execution no auth required

Posted by p on Feb 10

After some playing around I’ve noticed something interesting during
login phase: by sending wrong credentials, user is redirected on an
error page with url

http://192.168.1.1:666/login.cgi?cli=access%20login%20encrypted%2041544A25DC00170BA90659AD4CBDD9D9$

http://imgur.com/ZG1vU2t

In order to see what’s happening we must start the web server with the
debug output enabled:

httpd -o -p 666 -m -1 -v 5

and try again to login with wrong…

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